In the following link, several models for passive componets suitable to build high frequency circuits in QUCS Studio are available. It is delivered in a qucs project file that is accesible in the “Spice and Models” section of this site.
The models contained are the following:
1.- High frequency 0603 resistor
2.- High frequency 0402 resistor
3.- High frequency 0402, type wrap, resistor
4.- High frequency 0201 resistor
All of them, from VISHAY manufacturer. More info in the following link:
<p style=”text-align: center;”>https://csc-rf-electronics.blogspot.com/2020/12/rf-pasive-components-models-for-qucs.html</p>
The models are included in a QUCS Studio project, accesible in the following link:
<p style=”text-align: center;”>https://csc-rf-electronics.blogspot.com/p/spice-model.html</p>
In the file it is include also a kit of inductor values, 0603 geometry, from COILCRAFT. Previous first link will offer extra information.
Regards.